This guy does a practical test of which AA battery lasts the longest.
I was quite surprised about who the winner was.
About 5 minutes in to about 11 minutes he is extolling the virtues of some portable power pack. The rest is about the AA batteries.
Here is the video:
Two things to consider in the test you did:
ReplyDeleteThe advantage of lithium batteries is that the voltage output curve associated with lithium technology is close to horizontal until it gets near the end of its life -- then it drops fast to "zero"
you saw that in the flashlight test -- it stayed bright for most of the time (high voltage) then dropped fast near the end
second - with alkaline batteries -- you can't wait till the test is done, then remove the battery to get a voltage reading --they have a
'recovery" -- the only accurate voltage reading is by having a voltmeter attached to the battery as it is being tested. They require a "load" on them to get an accurate reading
The lithium does not require a load -- which it why the ending voltage reading was approx 0.3 volts
I wondered about the voltage. It seems he waited a while to do the voltage check. I would like to know what it was immediately upon dying. Another thing, rechargeable batteries are only 1.2 volts, and some of the alkalines measured above that at endpoint.
Deleteyeh, i use eneloops which start out low enough to set off the low battery indicator in some of my devices. they stay 1.3 for a good while though. i use them mainly b/c they are the last ones to corrode in my devices. they will too, but only if i leave them dead in the device a while. i've had the others corrode while still operating and ruined many an expensive item.
DeleteI have been using amazon basics rechargeables. They are ok. Less expensive than the energizers.
DeleteI've had good luck in the past with the Amazon Basics. I may have to consider the better Horror Freight battery the next time I order instead of just catching a sale somewhere I shop.
ReplyDeleteI looked on harbor freight site for the edge batteries. An 18 pack was 6.99 I think. On ebay it was 14.99. The first amazon basics batteries I bought were white with green and those lasted a long time. The next set i bought were almost all green and are not as good. I cannot find the first style I bought any longer.
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